9-33
9 Troubleshooting
NJ/NX-series CPU Unit Built-in EtherCAT Port User’s Manual (W505)
9-4 Replacing Slaves during Communications
9
9-4-5 Replacement Procedure
• When an EtherCAT slave is disconnected from the Sysmac Studio or with an instruction, com-
munications will stop and control of the outputs will be lost not only for the disconnected slave,
but for all slaves connected after it. Always confirm system safety before you disconnect an
EtherCAT slave.
• If noise occurs or an EtherCAT slave is disconnected from the network, any current communi-
cations frames may be lost. If frames are lost, slave I/O data is not communicated, and unin-
tended operation may occur. The slave outputs behave according to the slave specifications.
For details, refer to relevant manuals for each slave. If a noise countermeasures or slave
replacement is required, perform the following processing.
• Program the _EC_InDataInvalid (Input Data Invalid) system-defined variable as an interlock
condition in the user program. Refer to 6-1-3 Checking the Validity of the Process Data.
• Set the PDO communications timeout detection count setting in the EtherCAT master to at
least 2. Refer to 5-4-1 Setting EtherCAT Master for the setting procedure.
To Next Page
Loading...
Need help?
General
